<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>$Title$</title>
    <script src="${pageContext.request.contextPath}/statics/js/jquery-3.6.0.js"></script>

    <script>
      function a(){
        $.post({
          url:"${pageContext.request.contextPath}/a11",
          data:{"name":$("username").val()},
          success:function (data) {
            alter(data);
          },
          error:function (data1) {

          }
        });
      }


    </script>

  </head>
  <body>

   用户名:<input type="text" id="username" onblur="">

  </body>
</html>
